Fire extinguishing agent one-way flow control device and aircraft

Abstract

According to the fire extinguishing agent one-way flow control device and the aircraft, a shell outlet in the device is connected with an aircraft fire extinguishing agent conveying pipeline, one end of a spring abuts against a pressure adjusting gasket, and the other end of the spring tightly presses a valve; when one fire extinguishing bottle sprays a fire extinguishing agent, the pressure of the fire extinguishing agent acts on the valve, the pressure of the fire extinguishing agent is far larger than the spring force of the spring, the valve is pushed by the pressure of the fire extinguishing agent, and a fire extinguishing agent channel is opened; when the fire extinguishing agent flows to the other input port channel, the valve of the other input port channel is tightly pressed on the shell, the fire extinguishing agent cannot pass through the input port channel, and spraying of a fire extinguishing bottle connected with the input port channel is not affected; when the two fire extinguishing bottles spray the fire extinguishing agent at the same time, the pressure of the fire extinguishing agent sprayed by one fire extinguishing bottle is reduced after overcoming the spring force of the spring and is lower than the pressure of the fire extinguishing agent sprayed by the fire extinguishing bottle connected with the other inlet pipe nozzle, and the fire extinguishing agent sprayed by the fire extinguishing bottle connected with the other inlet pipe nozzle can push the valve to open a passage of the fire extinguishing agent. And fire extinguishing agent spraying is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft fire extinguishing systems and relates to a fire extinguishing agent one-way flow control device and an aircraft. Background Art

[0002] The aircraft fire protection system can spray fire extinguishing agent into the fire area of ​​the aircraft to extinguish the fire in the corresponding area.

[0003] At present, when designing a fire protection system, due to the weight limitation of the system, multiple fire extinguisher bottles often use a common delivery pipeline. Ordinary pipe joints will cause the fire extinguishing agent of one fire extinguisher bottle to hinder the spraying of other fire extinguisher bottles, resulting in low reliability. Summary of the invention

[0004] In order to solve the technical problem in the related art that the fire extinguishing agent of one fire extinguishing bottle hinders the spraying of other fire extinguishing bottles and the reliability is low, the present invention provides a fire extinguishing agent one-way flow control device and an aircraft. When using the device, the spraying of multiple fire extinguishing bottles does not affect each other. The technical solution is as follows:

[0005] In a first aspect, a fire extinguishing agent one-way flow control device is provided, comprising: a housing, and a first one-way flow control member and a second one-way flow control member arranged at two input port channels of the housing, wherein the angle between the two input port channels is a preset value, and the first one-way flow control member and the second one-way flow control member both comprise: a spring, a valve, an inlet nozzle, and a pressure regulating gasket,

[0006] The outlet of the shell is connected to the aircraft fire extinguishing agent delivery pipeline.

[0007] The pressure regulating gasket is arranged on the boss of the input port channel, one end of the spring is against the pressure regulating gasket, and the other end presses the valve. When the fire extinguisher bottle is not sprayed, the spring presses the valve. The valve is used to open or close the flow path of the fire extinguishing agent, and the pressure regulating gasket is used to adjust the opening pressure of the valve; the inlet nozzle is located at the entrance of the input port channel, and the inlet nozzle is connected to the outlet pipeline of the fire extinguisher bottle.

[0008] Furthermore, a sealing gasket is provided between the inlet nozzle and the shell, and the sealing gasket is used to ensure the sealing performance of the connection between the shell and the inlet nozzle.

[0009] Furthermore, when the fire extinguisher bottle is not sprayed, the valve is pressed against the shell under the action of the spring to ensure that the pipeline is in a sealed state.

[0010] In one feasible manner, when one of the fire extinguishing bottles sprays the fire extinguishing agent, the pressure of the fire extinguishing agent acts on the valve. The pressure of the fire extinguishing agent is much greater than the spring force of the spring. The pressure of the fire extinguishing agent pushes the valve to open the passage of the fire extinguishing agent. When the fire extinguishing agent flows to another input port channel, the valve of the other input port channel is pressed tightly against the shell, and the fire extinguishing agent cannot pass through, which does not affect the spraying of the fire extinguishing bottle connected to this input port channel.

[0011] In one feasible manner, when two fire extinguisher bottles spray fire extinguishing agent at the same time, the pressure of the fire extinguishing agent sprayed by one of the fire extinguisher bottles decreases after overcoming the spring force of the spring, and is lower than the pressure of the fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle. The fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle can push the valve normally, open the passage of the fire extinguishing agent, and complete the spraying of the fire extinguishing agent.

[0012] Optionally, the housing is fixed in a clamp, which is connected to the aircraft structure.

[0013] Optionally, the clamp is connected to the aircraft structure by means of screws and nuts.

[0014] Optionally, the pressure regulating gasket is a removable gasket with a thickness of 5 to 20 mm.

[0015] Optionally, the sealing gasket is made of rubber and has a thickness of 1 to 2 mm.

[0016] In a second aspect, an aircraft is provided, comprising the fire extinguishing agent one-way flow control device as described in any one of the first aspects.

[0017] The beneficial effects of the present invention are at least:

[0018] 1. The present invention provides a one-way flow control device for fire extinguishing agent, comprising: a shell, and a first one-way flow control member and a second one-way flow control member arranged at two input port channels of the shell, the angle between the two input port channels is a preset value, the first one-way flow control member and the second one-way flow control member both comprise: a spring, a valve, an inlet nozzle, and a pressure regulating gasket, the outlet of the shell is connected to the aircraft fire extinguishing agent delivery pipeline, the pressure regulating gasket is arranged on the boss of the input port channel, one end of the spring abuts against the pressure regulating gasket, and the other end presses the valve, when the fire extinguishing bottle is not sprayed, the spring presses the valve, the valve is used to open or close the fire extinguishing agent flow passage, and the pressure regulating gasket is used to adjust the opening pressure of the valve; the inlet nozzle is located at the inlet of the input port channel, and the inlet nozzle is connected to the outlet pipeline of the fire extinguishing bottle; when the inlet nozzle is located at the inlet of the input port channel, ... When a fire extinguisher bottle sprays fire extinguishing agent, the pressure of the fire extinguishing agent acts on the valve, and the pressure of the fire extinguishing agent is much greater than the spring force of the spring. The pressure of the fire extinguishing agent pushes the valve to open the passage of the fire extinguishing agent; when the fire extinguishing agent flows to another input port channel, the valve of the other input port channel is pressed against the shell, and the fire extinguishing agent cannot pass through, which does not affect the spraying of the fire extinguishing bottle connected to this input port channel; when two fire extinguishing bottles spray fire extinguishing agent at the same time, the pressure of the fire extinguishing agent sprayed by one of the fire extinguishing bottles decreases after overcoming the spring force of the spring, and is lower than the pressure of the fire extinguishing agent sprayed by the fire extinguishing bottle connected to the other inlet nozzle. The fire extinguishing agent sprayed by the fire extinguishing bottle connected to the other inlet nozzle can normally push the valve to open the passage of the fire extinguishing agent and complete the spraying of the fire extinguishing agent; when using this device, the spraying of multiple fire extinguishing bottles does not affect each other.

[0019] 2. A sealing gasket is provided between the inlet nozzle and the shell to ensure the sealing of the connection between the shell and the inlet nozzle.

[0020] 3. When the fire extinguisher is not sprayed, the valve is pressed against the shell under the action of the spring, which can ensure that the pipeline is in a sealed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a one-way flow control device for fire extinguishing agent provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the installation of a one-way flow control device for fire extinguishing agent provided in an embodiment of the present invention;

[0023] Among them: 1. Shell, 2. Spring, 3. Valve, 4. Sealing gasket, 5. Inlet nozzle, 6. Pressure regulating gasket, 7. Conduit, 8. Clamp, 9. Aircraft structure. DETAILED DESCRIPTION

[0024] The present application is further described in detail below through specific implementation methods and drawings.

[0025] An embodiment of the present invention provides a fire extinguishing agent one-way flow control device, see Figure 1 , comprising: a housing 1, and a first one-way flow control member and a second one-way flow control member arranged at two input port channels of the housing 1, the angle between the two input port channels being a preset value, the first one-way flow control member and the second one-way flow control member both comprising: a spring 2, a valve 3, an inlet nozzle 5, a pressure regulating gasket 6,

[0026] The outlet of the housing 1 is connected to the aircraft fire extinguishing agent delivery pipeline.

[0027] The pressure regulating gasket 6 is arranged on the boss of the input port channel, one end of the spring 2 is against the pressure regulating gasket 6, and the other end presses the valve 3. When the fire extinguisher bottle is not sprayed, the spring 2 presses the valve 3, the valve 3 is used to open or close the flow path of the fire extinguishing agent, and the pressure regulating gasket 6 is used to adjust the opening pressure of the valve 3; the inlet nozzle 5 is located at the entrance of the input port channel, and the inlet nozzle 5 is connected to the outlet pipeline of the fire extinguisher bottle.

[0028] When the fire extinguisher bottle is not sprayed, the valve 3 is pressed against the housing 1 under the force of the spring 2 to ensure that the pipeline is in a sealed state.

[0029] In one embodiment, when one of the fire extinguishing bottles sprays the fire extinguishing agent, the pressure of the fire extinguishing agent acts on the valve 3, and the pressure of the fire extinguishing agent is much greater than the spring force of the spring 2. The pressure of the fire extinguishing agent pushes the valve 3 to open the passage of the fire extinguishing agent; when the fire extinguishing agent flows to another input port channel, the valve 3 of the other input port channel is pressed against the shell 1, and the fire extinguishing agent cannot pass through, which will not affect the spraying of the fire extinguishing bottle connected to this input port channel.

[0030] In one embodiment, when two fire extinguisher bottles spray fire extinguishing agent at the same time, the pressure of the fire extinguishing agent sprayed by one of the fire extinguisher bottles will decrease after overcoming the spring force of the spring 2, and will be lower than the pressure of the fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle 5. The fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle 5 can normally push the valve 3 to open the passage of the fire extinguishing agent and complete the spraying of the fire extinguishing agent.

[0031] Another embodiment of the present invention also provides a fire extinguishing agent one-way flow control device, see Figure 1 , comprising: a housing 1, and a first one-way flow control member and a second one-way flow control member arranged at two input port channels of the housing 1, the angle between the two input port channels is a preset value, the first one-way flow control member and the second one-way flow control member both comprising: a spring 2, a valve 3, a sealing gasket 4, an inlet nozzle 5, a pressure regulating gasket 6,

[0032] The outlet of the housing 1 is connected to the aircraft fire extinguishing agent delivery pipeline.

[0033] The pressure regulating gasket 6 is arranged on the boss of the input port channel, one end of the spring 2 is against the pressure regulating gasket 6, and the other end presses the valve 3. When the fire extinguisher bottle is not sprayed, the spring 2 presses the valve 3. The valve 3 is used to open or close the flow path of the fire extinguishing agent, and the pressure regulating gasket 6 is used to adjust the opening pressure of the valve 3; the inlet nozzle 5 is located at the entrance of the input port channel, and the inlet nozzle 5 is connected to the outlet pipeline of the fire extinguisher bottle.

[0034] A sealing gasket 4 is provided between the inlet nozzle 5 and the housing 1 , and the sealing gasket 4 is used to ensure the sealing of the connection between the housing 1 and the inlet nozzle 5 .

[0035] The housing 1 is fixed in a clamp 8 , which is connected to an aircraft structure 9 .

[0036] The clamp 8 is connected to the aircraft structure 9 by means of screws and nuts.

[0037] The pressure regulating gasket 6 is a removable gasket with a thickness of 5 to 20 mm.

[0038] The sealing gasket 4 is made of rubber and has a thickness of 1 to 2 mm.

[0039] An embodiment of the present invention also provides an aircraft, including the fire extinguishing agent one-way flow control device provided by the embodiment of the present invention, such as Figure 1 shown.

[0040] The above only expresses the implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. In addition, the parts that are not detailed in this application are all conventional technologies.

Claims

1. A one-way flow control device for fire extinguishing agent, characterized in that: The invention comprises: a housing, and a first one-way flow control member and a second one-way flow control member arranged at two input port channels of the housing, the angle between the two input port channels is a preset value, and the first one-way flow control member and the second one-way flow control member both comprise: a spring, a valve, an inlet nozzle, and a pressure regulating gasket, The outlet of the shell is connected to the aircraft fire extinguishing agent delivery pipeline. The pressure regulating gasket is arranged on the boss of the input port channel, one end of the spring is against the pressure regulating gasket, and the other end presses the valve. When the fire extinguisher bottle is not sprayed, the spring presses the valve. The valve is used to open or close the flow path of the fire extinguishing agent, and the pressure regulating gasket is used to adjust the opening pressure of the valve; the inlet nozzle is located at the entrance of the input port channel, and the inlet nozzle is connected to the outlet pipeline of the fire extinguisher bottle.

2. The device according to claim 1, characterized in that A sealing gasket is provided between the inlet nozzle and the housing.

3. The device according to claim 1, characterized in that When the fire extinguisher bottle is not sprayed, the valve is pressed against the shell under the force of the spring.

4. The device according to claim 1, characterized in that When one of the fire extinguishing bottles sprays fire extinguishing agent, the pressure of the fire extinguishing agent acts on the valve. The pressure of the fire extinguishing agent is much greater than the spring force of the spring. The pressure of the fire extinguishing agent pushes the valve to open the passage of the fire extinguishing agent; when the fire extinguishing agent flows to the other input port channel, the valve of the other input port channel is pressed against the shell, and the fire extinguishing agent cannot pass through, which does not affect the spraying of the fire extinguishing bottle connected to this input port channel.

5. The device according to claim 1, characterized in that When two fire extinguisher bottles spray fire extinguishing agent at the same time, the pressure of the fire extinguishing agent sprayed by one of the fire extinguisher bottles decreases after overcoming the spring force of the spring, and is lower than the pressure of the fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle. The fire extinguishing agent sprayed by the fire extinguisher bottle connected to the other inlet nozzle can normally push the valve, open the passage of the fire extinguishing agent, and complete the spraying of the fire extinguishing agent.

6. The device according to claim 1, characterized in that The housing is fixed in a clamp, and the clamp is connected to the aircraft structure.

7. The device according to claim 6, characterized in that The clamp is connected to the aircraft structure by means of screws and nuts.

8. The device according to claim 1, characterized in that The pressure regulating gasket is a removable gasket with a thickness of 5 to 20 mm.

9. The device according to claim 2, characterized in that The sealing gasket is made of rubber and has a thickness of 1 to 2 mm.

10. An aircraft, characterized in that: The fire extinguishing agent one-way flow control device comprises any one of claims 1 to 9.

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